I'm trying to capture still images & video from an USB webcam (QuickCam Pro for Notebooks) with the raspberry pi model B (512MB)
I tried with streamer and mplayer. With streamer, some times I get a correct snapshot, but only the few times. With mplayer I get a green blinking video with the capture showing wrong colors (a lot of red/blue). Streamer also drops shots of this nature after one or two good captures.
A sample of the capure is here:

I would appreciate any clue about this issue